Clinically examined by Youssef (Joe) Soliman, MD-- Created by Jenna Fletcher-- Upgraded on November 4, 2021

Undigested food in an individual's feces is not generally a reason for issue. The body can not completely damage down high-fiber foods or foods with thick skins, such as sweetcorn. Subsequently, these might go through the digestion system unmodified.


When undigested food in the feces accompanies a modification in digestive tract behaviors, weight reduction, or looseness of the bowels, this might indicate a hidden problem that requires clinical focus.

In this write-up, we take a look at reasons undigested food might show up in feces as well as when an individual must talk to a physician.


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There are some reasons that the body could not totally absorb foods that do not trigger worry.

Undigested food can show up in the feces if there is product in food that is indigestible, such as cellulose in some high-fiber foods. This might be because of an individual not eating the food well or the food having coverings or skins that the body's all-natural enzymes can not damage down.

It can likewise occur if food passes as well rapidly via the digestion system, as an example, if the individual has a problem such as Crohn's illness, which triggers swelling in the gastrointestinal system. If somebody has stomach surgical procedure or a digestive tract resection, it can additionally take place.

High-fiber foods

Fiber describes the indigestible component of plant foods. A high-fiber diet regimen can have lots of advantages, consisting of maintaining the digestion system healthy and balanced as well as maintaining defecation routine.

When an individual consumes high-fiber foods, it prevails for some undigested product to show up in the feces due to the fact that the body can not completely damage down the difficult product.

Fiber likewise accelerates an individual's defecation by including mass to the feces, which urges the digestive tract wall surfaces to relocate. This activity presses food with the gastrointestinal system.

An individual might not completely absorb some foods if food relocates also swiftly with the digestion system.

Particular foods are more probable than others to be challenging to completely absorb. These foods consist of:

seedsvegetable skinscertain grains

Foods such as corn typically continue to be partly undigested. Corn has an external covering made from an indigestible product called cellulose. The body absorbs the product within the corn and also gets rid of the difficult external covering in the feces.

High-fiber foods are helpful for most individuals. Find out more below.

Consuming as well rapidly

One more safe offender of undigested food showing up in feces is consuming as well promptly. When an individual consumes also quick and also ingests their food without totally eating it, food is more probable to travel through the digestion system without being totally damaged down.

Consuming as well promptly might compel food digestion to happen also quickly, causing even more food not being completely damaged down. To prevent this, an individual can reduce their consuming throughout dishes and also eat their food for longer.


One of the most usual root cause of undigested food showing up in feces is coarse foods, yet some clinical problems can lead to entire or partly absorbed food showing up in feces. In these instances, an individual typically notifications various other signs and symptoms, such as looseness of the bowels or tummy discomfort.

Clinical problems that might trigger undigested food to show up in the feces consist of the following:

Crohn's illness

This problem is a sort of inflammatory digestive tract illness that creates swelling in the digestive system system.

Signs and symptoms consist of:

serious looseness of the bowels

In many cases, undigested food might show up in an individual's feces.

Discover more regarding Crohn's illness.

Gastric condition

This is an autoimmune problem where the body can not absorb the healthy protein referred to as gluten, which takes place in wheat, barley, as well as various other grains.

Signs and symptoms consist of:

diarrhealactose intolerance

Some individuals might see undigested food in their feces.

Find out more regarding gastric condition.

Pancreatic lack

An individual with pancreatic deficiency does not have enzymes in the pancreatic, making it difficult to damage down food. This can cause undigested food showing up in feces.

Signs and symptoms of this problem consist of:

stomach pain as well as bloatingweight lossfatty feceses

What is exocrine pancreatic deficiency?

Lactose intolerance

It might suggest lactose intolerance if an individual's gastrointestinal system can not damage down the healthy protein in milk and also dairy products.

Signs and symptoms consist of:

bloating as well as gasdiarrheanausea as well as vomitingabdominal discomfort"growling" in the tummy

Undigested food can show up in the feces of individuals with lactose intolerance.

What is lactose intolerance?

Short-tempered digestive tract disorder (IBS)

IBS is an usual problem that influences the huge intestinal tract.

Signs consist of:

bloating and also painthe sensation that a defecation is incomplete

Some individuals might additionally see undigested food in their feces.

Learn even more concerning IBS.

Gastroenteritis, or a "belly insect"

A tummy pest, belly influenza, or intestinal infection might trigger undigested food in the feces as a result of food passing promptly via an individual's system. Various other signs and symptoms of a belly pest consist of:

bloatingabdominal crampingwatery diarrheavomitingnausea

For the most part of a belly infection, signs will certainly fix in a couple of days when the infection has actually passed. Nonetheless, dehydration can rapidly come to be major. Individuals must look for clinical aid at the same time if they or somebody else has indications of dehydration or experiences:

extreme discomfort or aggravating symptomschanges in mindset or consciousnesssix or even more loosened feceses in a daydiarrhea lasting greater than 2 days

There is an opportunity that undigested food might show up in the feces.

Figure out even more concerning gastroenteritis.


An individual that notifications a great deal of undigested food in their feces ought to not stress the majority of the moment, as it is most likely to be as a result of undigested fiber or consuming as well promptly.

If somebody notifications the list below signs plus undigested food in their feces, they must speak to a medical professional:

unusual weight lossblood in stoolchanges in digestive tract habitsloss of control of bowelschronic diarrheapersistent stomach discomfort or crampingpersistent bloating or gassigns of dehydration, such as raised thirst or lowered peeing

If a physician thinks that an individual has a problem influencing their gastrointestinal system, they might purchase the complying with analysis examinations: